Container opener



FIG. 1 is a top perspective view of a container opener showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a right side elevational view thereof, the left side elevational view being a mirror image. 

The ornamental design for a container opener, as shown and described. 